Convert WOFF and WOFF2 to TTF using fontforge

convertToTTF.sh

#!/usr/bin/env bash

set -o nounset
shopt -s nullglob

function convertFont() {
        fontfile="${1}"
        filename=$(basename -- "$fontfile")
        extension="${filename##*.}"
        filename="${filename%.*}"

        targetfontfile="${filename}.ttf"
        echo "Converting ${fontfile} to ${targetfontfile}"
        fontforge -lang=ff -c 'Open($1); Generate($2)' "${fontfile}" "${targetfontfile}"
}

function main() {
        for wofffile in *.woff; do
                convertFont "${wofffile}"
        done;

        for woff2file in *.woff2; do
                convertFont "${woff2file}"
        done;
}

main